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Nowadays, passive coherent location (PCL) radar technology has become a subject of intensive investigations owing to its unique features, such as the absence of range and velocity ambiguity, low probability of interception (LPI), small size and low price. A study of PCL radar performance for the case when a distant, weak target echo is shadowed by strong echoes is presented. The presented method increases PCL radar performance in the distant zone by adaptive removal of strong echoes from the received signal.
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Kulpa et al. (2005) studied this question.
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